Over the course of six dramatic hours, the documentary follows the legendary Big Apple Circus on an unforgettable journey from the big top to the "back lot", where nail-biting drama unfolds both high in the air and down on the ground and the real heart of the circus beats. Circus goes behind the scenes to explore a distinctive world with its own rules and lingo and no fixed address. It reveals the sights, sounds and stories of the circus' fascinating cultural legacy in unprecedented breadth and scope as viewers escape into a place of passion, excitement, perseverance and even heartache. From the training and rehearsals to the bravery and the intensity of life - and work - in the circus, the cameras capture it all. Grab a front-row seat as members of the Big Apple family experience life-changing moments.